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(No Model.) 4 Sheets-Sheet 1. G. W. PATNOE. PORTABLE DERRICK.

No. 482,528. Patented Sept. 13, 1892.

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(No Model.) 4Sheets-Sheet 2. G. W. PATNOE.

PORTABLE DERRICK. N0. 482,528. I Petented' Sept. 13, 1892.

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Patented Sept. 13, 1892.

MTNEIESE E53 1': Moms nuns co.. wa'rnrurum, WASHINGTON n c UNITED STATESPATENT OFFICE.

GEORGE W. PATN OE, OF CHICAGO, ILLINOIS, ASSIGNOR TO HIMSELF, JASON H.SHEPARD, AND JOHN DOLESE, OF SAME PLACE.

PORTABLE DERRICK.

SPECIFICATION forming part of Letters Patent No. 482,528, datedSeptember 13, 1892. Application filed June 25, 1892. Serial No. 38.045.(N model.)

To all whom it may concern.-

Be it known that I, GEORGE V. PATNOE, a citizen of the United States,and a resident of Chicago, county of Cook, and State of Illinois,

5 have invented new and useful Improvements in Portable Derricks, ofwhich the following is a specification, reference being had to theannexed drawings, four sheets, in which- Figure 1, Sheet 1, is alongitudinal eleva- IO tion of a derrick in which is embodied myinvention and improvement, with the wheels of the truck removed; Fig. 2,Sheet 2, a vertical central longitudinal sectional elevation of thesame; Fig. 3, Sheet 3, a plan or top View %f Fig. 1; Fig. 4, Sheet 4, anend elevation of The nature, construction, and operation of myimprovement in derricks will be fully comprehended by the followingdetail dezo scription.

My purpose is to constructa derrick which is mounted on a truck, andthus can be made available for general light work in stone-yards, butmore especially in yards or works Where the stone handled is to becrushed or broken and is to be speedily handled.

A 13 represent the bolstersupports, by means of which the bed of thederrick is mounted on two axles 17 17 and wheels 14.

F F F represent three angle-irons, which are even distances apart andare firmly secured to the bolster A B and support all the operatingdevices above, and they are also securely bolted to an angle-bar 12underneath, 3 5 which is placed transversely to the longitudinal bars F,and its ends project out from the bars F at both sides of the derrick.An angle-bar D is joined to each outer bar F at E, so as to swingineitherdirection and to serve as a support to prevent the tilting of thederrick when loaded, and to relieve the joint from undue strain asliding stirrup 11, Fig. 4, is made to inclose the support D and the projecting end of the bar12, and under the outer portion of each support isplaced a prop 13. By detaching the stirrup 11 by sliding it out onsupport D the latter may occupy positions at other angles relative tothe bars F. To the upper faces of angle-bars F F F is securely bolted abed-plate I, on which is formed a track for the inclined wheelsJ J totravel on.

The turn-table consists, substantially, of two lower angle-bars F F andtwo trussframes G G, securely bolted thereto. Thetop of the two trussesare secured by a cap-plate 5 5 9, whose ends W are turned down andbolted to the inner portions of the trusses, and Within the cap-platecentrally is placed a strong bearing 10, which turns with the truss on apivot formed on the top end of a strong post S. This post at its bottomportions is firmly keyed in the base-plate I, and it supportssubstantially the whole weight of the turning portion of the mechanism,and the wheels J J may travel entirely round the bed I on a 6 5horizontal circular track formed for that purpose; but the track andwheels serve as a guide rather than other support. Firmly secured to theinside of the top portion of one truss is a hanger-plate 14', with aboss on which is formed a bearing for a horizontal shaft 9. On the innerend of this shaft is affixed a vertical bevel-pinion U, and this pinionmeshes into a bevel-pinion V on a vertical shaft Q, which has onebearing affixed 7 to a fixed plate T, which is supported by the trussand a vertical post 2 and has the other box fixed to the angle-bar F.The shaft Q is hung to have no vertical movement and on its lowerportion is aflixed a pinion P, which 8o meshes into a gear-wheel O,surrounding the post S and secured to the bed-plate I.

L L are hanger-plates, which are rigidly secured to the truss at eachlower portion thereof, and pivoted to them, respectively, are 8 5 therollers J J.

The spar is composed of two plates M N, so forked at their lower ends Mthat each fork lies against a truss-plate and so that both forks arepivoted to the two trusses by one 0 rod or shaft h, Fig. 4. The outerend of the spar is provided with a sheave f in the ordinary manner andis supported and adjusted, as described, by a wire rope or chain c,attached to outer portion of the spar, brought 5 over the cap-plate 9,and secured to sliding collar 5 on shaft S, and round the shaft abovethe collar is placed a sliding ring 3, which is held in any desiredfixed position on the shaft by a set-screw 4.

Y is a drum, to which is rigidly affixed a gear-wheel X. The shaft ofthe drum has bearings secured to the inclined sides of the truss.Apinion Z meshes into the gear-wheel X, and its shaft also has bearingssecured to the inclined side of the truss, and cranks a b are affixed tothe shaft to be turned to rotate the drum Y.

d (I represent a simple form of tackle for elevating stone.

L' 2' 1' represent a Y-shaped clutch, the upper prongs of which arepivoted to the rod or shaft h, so as to swing, Figs. 2 and 4, and thelowerend consists of two jaws, which may engage either of the bars F,and thus lock the truss as a fixture to preventa swinging movement ofthe spar.

K K represent the angle-irons which are employed by means of suitablebolts to support the ends of the bars F F.

7 represents a brace, two of which are required to be attached to thecap-plate 9 and the base F when the derrick is required to raise veryheavy loads.

To turn the spar round, raise the clutch z' 2' 2' and turn the shaft gby placing the crank a thereon. Then reset the clutch. The furtheroperation is not essentially different from that of other derricks.

Having thus described my invention, I claim and desire to secure byLetters Patent- 1. In a portable derrick, the three anglebars F, mountedon the bolsters of a truck, and lateral supports hinged thereto, incombination with a fixed under cross-bar and a slidable stirrupembracing both the bar and the support, as and for the purposespecified.

2. The combination of the spar with a rotating truss, a centralbed-plate, and a central post-support, rollers interposed between thetruss and bed-plate, and a slidable collar 5 on the post, a slidingadjustable ring on the post above the collar, and a supporting-ropeattached to the collar and to the spar, as and for the purposespecified.

GEORGE W. PA'INOE. Witnesses:

G. L. CHAPIN, LoUIs SKIELVIG, Jr.

